Another Navigation Update Help Thread

Hi,
I have been trawling through so many threads about navigation updates and I just want to confirm the following please so that I am clear on what to do next:
My MMI details are:3g High MMIMy current version is:Software version: HNav_EU_K0206_3_D1Nav. database version: 8R0060884QAN 5.2.7

Questions:

Is there anyway to download the maps updates without a huge fee?

Assuming I need to update my firmware, can I update to the latest or is there a firmware upgrade path I need to follow?

Is there a 3rd party supplier of maps for the above MMI and if so who and will I still require a visit to an Audi service centre?

Note, I would be happy with 2014 to 2015 maps as anything is better than my present 2011 maps ( Brisbane has changed a little since 2011).